Gigaset's GX4 is a robust rugged smartphone that brings along many forgotten virtues: An exchangeable battery, audio jack, and microSD support. But that is not all, Gigaset also provides a long update supply. There are some compromises to be made, however, which we detail in our review.https://www.notebookcheck.net/Gigaset-GX4-Review-The-sustainable-rugged-smartphone.704824.0.html
What's this? A smartphone with IP68 certification AND a removable back and replaceable battery? But we were told that a removable back would compromise water resistance!
I guess gluing in the batteries wasn't really about improved water resistance after all.
Looks like a decent phone for a secondary device or dedicated work phone.